diff --git a/.github/pull_request_template.md b/.github/pull_request_template.md
index 967726cea..49eaa4921 100644
--- a/.github/pull_request_template.md
+++ b/.github/pull_request_template.md
@@ -15,8 +15,6 @@
 - [ ] master (the latest development version)
 - [ ] v1.4 (TiDB Operator 1.4 versions)
 - [ ] v1.3 (TiDB Operator 1.3 versions)
-- [ ] v1.2 (TiDB Operator 1.2 versions)
-- [ ] v1.1 (TiDB Operator 1.1 versions)
 
 ### What is the related PR or file link(s)?
 
diff --git a/README.md b/README.md
index cebbf42d7..8a11b87df 100644
--- a/README.md
+++ b/README.md
@@ -20,10 +20,9 @@ Currently, we maintain the following versions for TiDB on Kubernetes documentati
 | Branch name | Version description |
 | :--- | :-- |
 | `master` | the latest development version |
-| `release-1.5` | the 1.5 version (latest stable) |
 | `release-1.4` | the 1.4 version |
 | `release-1.3` | the 1.3 version |
-| `release-1.2` | the 1.2 version |
+| `release-1.2` | the 1.2 version (archived) |
 | `release-1.1` | the 1.1 version (archived) |
 | `release-1.0` | the 1.0 version (archived) |